Archive for the 'Night Vision Monoculars' Category
Night vision equipment work in the near-infrared band at a wavelength of about 1 micrometer. Unlike thermal imaging systems, which operate in complete darkness by detecting heat radiation signatures in infrared wavelengths beyond 3 micrometers, night vision works in near darkness by detecting ordinary ambient light, usually from the moon and stars, that is reflected by objects in the scene being viewed. Night vision contains an image intensifier tube that uses the photoelectric effect to amplify very weak light. As each photon of incoming light collides with a detector plate inside the intensifier tube, the plate ejects several electrons that are further amplified into a cascade of electrons. These electrons are accelerated by a strong electric field towards a phosphor screen which emits light at the point of impact of the electrons. A bright image is thus formed on the phosphor screen. Outdoor environments that are illuminated only by star light can be easily viewed using night vision devices.
Most night vision devices do not detect color information, and hence a monochromatic phosphor screen is sufficient. A green phosphor display is generally used because the human eye is most sensitive to the color green, which falls in the middle of the visible light spectrum.
I was this FT 350 Recon Night Vision Monocular and I was stunned to see that it was selling for less than $300. Even better, it’s selling for almost half that! Where I live the brick and mortar retailers make a killing off of this stuff, buying it low nd selling it high. Granted, that’s business and they have to make a living, but with a price like this there’s just no reason to pay more.
And the price isn’t even the best part. I got reasonable, down to earth advice about what I needced to buy based on my own usage requirements. A lot of people in the retail stores have no idea how to assess your needs and suggest the right gear for your applications. That’s not the case at Scout Master! Just a few of the great FT 350 features:
• Fully focusing with coated optics and anti-bloom protection
• Self-energizing power supply -eliminates the need for main batteries.
• Contemporary lightweight design with rugged composite
housing